SOLAR SYSTEM

Detailed explanation-1: -Newton also realized that the moon would fly off away from Earth in a straight line tangent to its orbit if some force was not causing it to fall toward the Earth. The moon is only a projectile circling around the Earth under the attraction of Gravity.

Detailed explanation-2: -Why is it important that a satellite remain above Earth’s atmosphere? A satellite mustremain above Earth’s atmosphere because air resistance would not only slow itdown but also incinerate it at its high speed.

Detailed explanation-3: -12. Why will a projectile that moves horizontally at 8 km/s follow a curve that matches the curvature of the earth? Because 8 km/s tangential speed is sufficient for the 5-m vertical drop at the end of the first second to match the corresponding 5-m drop of Earth’s curvature.